Originally Posted by jetsetter

The airlines operate under a whole separate series of laws, rules, and regulations. There may be DOT regulations that require carriers to honor tickets once issued. I know in the pre-internet days if an airline accidentally aedvertised say a $2 fare, they must honor the rate on the day that it is advertised in the newspaper but then they can retract it the next day. This came up in the 90's with a CO fare from BOS to the west coast, but they ednded up having to honor tickets bought the day the mistyped add ran in the newspaper.